baber/WOPTO huggingface dataset:
Patent CA-2036605-A1 (CA)
Title: Carrier stability erasure filling system for communications over electricity distribution network
Inventor: MAK SIOE T
IPC: H02J13/00
Filed: 1991-02-19
Abstract: A communication system uses the current waveform of an electricity distribution network as a carrier, the signal being present as current pulses around four predetermined zero crossings. The current waveform is sampled around the voltage zero crossings to obtain a time-ordered set of waveform values.  The ordered waveform values for each bit are examined to determine if the values fall within preset criteria indicative of a stable carrier. When the ordered waveform values for a particular bit all fall within the preset criteria, that particular bit is identified as a good bit. When at least some of the ordered waveform values for a particular bit fall outside the preset criteria, that particular bit is labelled as suspect.      The ordered values of each suspect bit and of adjacent bits are tested to determine whether four successive values meet the preset stability criteria, and whether the four successive values indicating a stable carrier include at least two successive values from the suspect bit. If the carrier stability test is passed, the binary value of the suspect bit is based upon the successive carrier stability indicating values from the suspect bit. Otherwise the suspect bit is labelled as uncorrectable.
Patent CA-2038124-A1 (CA)
Title: Color change valve assembly
Inventor: MEDLOCK D WILLIAM
IPC: F16K41/00
Filed: 1991-03-12
Abstract: Abstract of the Disclosure A seal assembly for sealing a valve needle having a generally circular cross section transverse to its longitudinal axis.  The needle is situated inside a valve assembly including a housing having a longitudinal axis.  The needle controls flow of a fluid from a fluid supply line to a fluid outlet passage.  The seal assembly comprises a seal positioner including a cylindrical body portion surrounding the needle and having a first end, a second end, and an inner side wall having a cross section larger than the cross section of the needle to define a space between the inner side wall and the needle.  The seal positioner also includes a partition for coupling the body portion to the needle to align the body portion concentrically with the needle and to maintain the concentric alignment upon misalignment of the longitudinal axis of the needle and the longitudinal axis of the valve assembly.  The partition provides first and second sealing regions spaced longitudinally along the needle.  A first seal in the first sealing region extends perimetrally around the needle and contacts a first portion of it.  A second seal in the second sealing region extends perimetrally around the needle and contacts a second portion of it.
Patent CA-2039502-A1 (CA)
Inventor: BALDWIN JOE M
IPC: F24F11/00
Filed: 1991-04-02
Abstract: A method of controlling the operation of an HVAC system comprising the steps of:  accepting an input; selecting a first mode of operation if the input has a value in excess of a first predetermined limit; selecting a second mode of operation if the input has a value less than a second predetermined limit; selecting a third mode of operation if the input has a value which is between the second and the first predetermined limits.
Patent CA-2039715-A1 (CA)
Title: Data processing system and process for controlling it and cpu boards
Inventor: SCHLAGE THOMAS
IPC: G06F13/28
Filed: 1990-08-23
Abstract: ABSTRACT      Data processing system and method for controlling the latter as well as a CPU board In a data processing system having a central processing unit (CPU), a main memory (2) and a system bus (3) which can be connected to the main memory (2) and various other functional units, the main memory (2) can be directly connected to the CPU (1); a first switching mechanism (5), which controls the connection between the CPU (1) and main memory (2), and a second switching mechanism (7), which controls the connection between the system bus (3) and the main memory (2), are provided; the first and second switching mechanisms (5,7) are interconnected so that only one of the two switching mechanisms can release the connection between the CPU (1) or the system bus (3) and the main memory.  The main memory, the first and second switching mecha-nisms as well as the first and second buffers are provided on the same board as the CPU (1).
Patent CA-2048452-A1 (CA)
Inventor: HANSON LARRY G
IPC: B60H1/03
Filed: 1991-08-06
Abstract: In a large vehicle,  such as a bus,  a fuel-fired coolant heating system.  The heating system uses a heating unit to add heat energy to the coolant, which is then circulated to heat exchangers throughout the vehicle.  Safety features in the system include an impact switch which immediately stops the flow of fuel to the heating unit in the event of an accident.  Another feature which contributes to safe operation of the system is the presence of a deaeration tank in the coolant flow path.  The tank allows for the removal of air so that air locks can be prevented and is fitted with a pressure relief valve should overheating occur.  Finally, service and inspection of the system is facilitated by attaching components of the system to a slide panel, which can be pulled out of the side of the bus.  By making the components of the system easily accessible, problems are generally avoided and safety is, therefore, improved.  The heating unit for use with the present invention is one which is available from Espar Products, Inc., of Mississauga, Ontario, Canada, and is known as a D 12 W diesel-fired coolant heater having a capacity of 41,000 BTU per hour.          Safety features built into the Espar heater include a flame sensor and an overheat cutout switch.  The impact switch, deaerator tank and slide panel of the present invention are added safety features which make diesel-fired heaters usable in critical applications such as school buses.
Patent CA-2049299-A1 (CA)
Title: Power amplifier
Inventor: JENSEN OLE H
IPC: H03G3/30
Filed: 1991-01-25
Abstract: This invention relates to power amplifiers, such as pulsed power amplifi-ers, for amplifying radio frequency sig-nals and to a method of amplifying radio frequency signals. The power amplifier in accordance with the invention is re-sponsive to a power level control signal so as to amplify radio frequency signals to define any one of a plurality of ampli-fier output power envelopes. The power amplifier comprises means (110, 112, 114) for generating a predetermined time varying signal which represents a prede-termined one of the plurality of amplifier output power envelopes, means (130) for modifying the time varying signal in re-sponse to the power level control signal (124) for definition of a selected output power envelope and control means (108) for controlling the amplifier output pow-er in response to the modified time vary-ing signal to amplify the radio frequency signal according to the selected one of said plurality of output power envelopes. The time varying signal may be a sequence of values stored in memory (114). The modi-fying means may be a clipper which clips the time varying signal at a value that depends on the power level control signal or a multiplier (130) that multiplies the times varying signal by a value that depends on the power level control signal or a subtractor that substracts a value from the time varying signal which depends on the power level control signal.
Patent CA-2049699-A1 (CA)
Title: Monohydrogen orthophosphate deicing composition
Inventor: IRELAND DONALD T
IPC: C09K3/18
Filed: 1991-08-22
Abstract: A deicing composition which includes NaCl and an orthophosphate selected from the group consisting of MgHPO4, Na2HPO4, K2HPO4, (NH4)2HPO4, hydrated forms thereof and mixtures thereof. When the monohydrogen orthophosphate has the alkali metal ions or ammonium cation, the deicing composition includes a water soluble magnesium salt. A method of deicing using the deicing composition also is described.
Patent CA-2050118-A1 (CA)
Title: Filter
Inventor: HAERLE HANS A
IPC: B01D53/92
Filed: 1991-08-28
Abstract: ABSTRACT                         Filter A filter for removing impurities from waste gases, especially from the waste  gases  of  an  internal  combustion  engine, comprises  a  filter  body  consisting  of  a  plurality  of compression moulded, high temperature resistant,  sintered filter plates consisting of metal powder, metal chips, metallic fibres or a mixture thereof, which,  arranged on top of or behind one another and kept at a distance from one another by means of spacers,  form between them a plurality of flow channels (8, g).   The flow channels are open at one side and closed at the other side in order to form inlet and outlet channels.  The walls of the filter plate situated between the inlet and outlet channels (8, 9) constitute filter surfaces. The filter plates are formed by filter discs (1) lying on top of one another, arranged in a filter housing (5) and having a free central interior space (4), the waste gases flowing through said filter discs from the outside towards the inside or from the inside towards the outside.            Fig. 5
Patent CA-2050553-A1 (CA)
Title: Medical paste syringe and filling method
Inventor: NOWAKOWSKI KAROL
IPC: A61M5/00
Filed: 1991-09-03
Abstract: ABSTRACT OF THE DISCLOSURE         A disposable syringe cylinder suitable for easy insertion  into a medical paste injector. The disposable  syringe  cylinder  is prefilled  by  the supplier with a sterile medical paste.   A flexible piston is inserted by the supplier into the proximal end of the disposable syringe cylinder.  The flexible piston serves as a seal between the sterile    medical paste of the outer environment. It also functions as the piston whereby proximal-to-distal force applied by the medical paste injector propels medical paste from the disposable syringe cylinder.   The direction  of travel  of  the flexible piston  is only proximal-to-discarded   and  the  disposable  syringe  cylinder  is discarded when empty. The flexible piston has a flat proximal surface without any means for gripping the medical paste injector.
Patent CA-2050986-A1 (CA)
Title: Chlorine-free process for bleaching pulp
Inventor: FARRELL ROBERTA L
IPC: D21C9/10
Filed: 1991-09-09
Abstract: - 18 -             Case 156-7131 A B S T R A C T            A chlorine-free method for bleaching chemical pulps, particularly kraftpulp, uses a first step of treating the pulp with a hemicellulose acting enzyme of a microorganism. Subsequently, the treated pulp is extracted, treated with chlorine dioxide, re-extracted and retreated with chlorine dioxide to result in a brightness level of at least 88.   6300/DH/Gro
Patent CA-2051283-A1 (CA)
Inventor: DENT PAUL W
IPC: H04B7/08
Filed: 1991-09-13
Abstract: two or more signal paths are provided for receiving a radio frequency signal. One or more signal paths include conventional bandpass filters for eliminating interference and noise signals. One or more remaining signal paths include reduced filtering devices for increasing the sensitivity of a radio frequency receiver to the desired signal.      Each of the receiving paths is coupled to a respective radio frequency amplifier. Provided that each radio frequency amplifier has equivalent current-source output impedances, the output signals from each amplifier are added constructively if they are in- phase. If the output signals are out-of-phase, a phase inverter inverts the phase of one signal so that the signals may be added constructively. The combined signals of the two or more radio frequency amplifiers pass through various signal processing components associated with conventional superheterodyne receivers. A control unit produces gain variation signals for controlling the gain of each radio frequency amplifier. Accordingly, the control unit controls whether the desired signal is received from a first signal path, a second signal path, or as a weighted combination of two or more signal paths.
Patent CA-2051606-A1 (CA)
Inventor: YOKOUCHI KISHIO
IPC: C04B38/08
Filed: 1991-09-17
Abstract: A multi-layer wiring board comprising a laminate of glass ceramic layers and conductor patterns, the glass ceramic layers being made of a glass ceramic comprising glass and ceramic particles dispersed therein, the glass ceramic layers further comprising hollow or porous silica glass spheres dispersed in the glass ceramic, the hollow or porous silica glass spheres being covered with a ceramic coating layer containing aluminum as a constitutional element.  This enables a crystallization of the silica spheres to be prevented, and thus a rapid increase of the thermal expansion coefficient and a formation of pores in the surface of the spheres are also prevented.
Patent CA-2051854-A1 (CA)
Inventor: KAMIMURA MASATSUGU
IPC: H03H17/04
Filed: 1991-09-19
Abstract: A computing method of floating-point represented data comprising the step of dividing data x with a n (n>m) bit length into high rank data  X  and low rank data .alpha. with a mutual m bit length, a mantissa part of the high rank data X'  leaving the same bits as those of the data x by k bits (k? 1) from its initial bit to replace the rest of the bits of  X ?  by zero, the low rank data .alpha. being formed as  X-X ? , and computing other data together with the high rank data  X ? and the low rank data .alpha. .
Patent CA-2052766-A1 (CA)
Title: Methods and apparatus for maintaining cache integrity whenever a cpu write to rom operation is performed with rom mapped to ram
Inventor: LAM SON H
IPC: G06F12/00
Filed: 1991-10-04
Abstract: Methods  and  Apparatus  for  maintaining  cache integrity in a computing system that includes  a central processing unit (CPU), Random Access Memory (RAM), Read Only Memory (ROM), and a local memory controller for controlling cooperation between said CPU,  RAM and ROM,  wherein said computing system is capable of supporting a ROM mapped to RAM mode of operation, and further wherein said local memory controller, whenever said ROM mapped to RAM mode is enabled, (1)  implements  a  snoop  cycle  to  detect  CPU  write  ROM operations  and,  upon  detecting  such  an  operation,  (2) provides a cache invalidation signal to the CPU.  The CPU utilizes   the   invalidation   signal,   along   with   the invalidation address on the local bus coupling the CPU and memory  controller,  to  invalidate  any  cache  data  entry corresponding to the main memory address targeted by the CPU write ROM operation.  The invalidation takes place while the write operation is in progress.
Patent CA-2052783-A1 (CA)
Title: Ocular implants and methods for their manufacture
Inventor: GOLDBERG EUGENE P
IPC: A61L27/34
Filed: 1991-10-04
Abstract: An improved method for modifying the surface of an ocular implant material by the gamma or electron beam irradiation induced chemical graft coating thereon of a monomer comprising N-vinyl-pyrrolidone, 2-hydroxyethyl-methacrylate or a mixture of the two to form a hydrophilic graft polymer coating, the improvement comprising pre-soaking the ocular implant material in a monomer or a solution comprising a monomer prior to conducting the gamma- or electron beam-irradiation induced graft polymerization in a second solution of monomer.
Patent CA-2055703-A1 (CA)
Inventor: RODGERS WILLIAM C
IPC: A47C23/00
Filed: 1991-11-15
Abstract: A spring assembly for bedding and furniture which includes a rectangular support frame and a grid unit disposed above and in general vertical alignment with the frame, the grid unit including a border wire and cross wires arranged in a criss-cross pattern on said border wire.  A plurality of upright formed wire spring modules are arranged in a predetermined pattern on the grid unit and supported on said frame.  Some of the modules constitute main springs which are attached in a clipless manner at the upper ends thereof to the grid unit so as to be connected to the grid unit in a manner such that loads on the grid unit are yieldably resisted by the main springs.  Others of the spring modules are corner springs located at the corners of the frame.          The corner springs are similar to the main springs but are secured by conventional clips to the corners of the border wire in the grid unit.  Each of the spring modules is of one-piece wire construction and is of downwardly tapered shape to enable grid and spring module assemblies to be efficiently arranged in compact nested stacks for shipping and storage.
Patent CA-2059159-A1 (CA)
Title: Arrangement for cutting sheet metal
Inventor: NOE OSKAR
IPC: B23D35/00
Filed: 1992-01-10
Abstract: ABSTRACT OF THE DISCLOSURE    An arrangement for cutting sheet metal, particularly sheet metal strips.  The arrangement includes a double cutting tool with two outer knives and an inner knife which is movable between the outer knives so as to form two cutting gaps.  The outer knives are adjustable relative to each other by adjusting wedges in order to adjust the cutting gaps such that the two outer knives are adjusted by the adjusting wedges synchronously or asynchronously by either the same or a different extent.  The two outer knives can be clamped against the adjusting wedges.
Patent CA-2061921-A1 (CA)
Title: Waste-collecting container
Inventor: BITSCH BARTHOLOMAEUS
IPC: B65F1/14
Filed: 1992-02-26
Abstract: A WASTE-COLLECTING CONTAINER                 ABSTRACT OF THE DISCLOSURE   A waste-collecting container for compostable waste, in which the interior consists of two spaces arranged one above the other, the lower space having the purpose of collecting a liquid from the compostable waste and the capability of discharging such liquid.  This space is thereby, on the one hand, sufficiently large in order to be able to reliably receive the accumulating liquid, on the other hand, the emptying of both the liquid area and also of the waste container itself is to take place easily and without any problems associated with the waste becoming again mixed with the liquid.  The lower space is for this purpose separated by a fork-like grate from the remainder of the container housing, which grate is usually arranged horizontally, however, during emptying pivots about an axle which is horizontally oriented in the container housing.  A reliable separation of solid and liquid waste and their complete emptying out of the waste-collecting container is, in this manner, assured.
Patent CA-2063364-A1 (CA)
Inventor: ROBERTS GLYN
IPC: H03G3/20
Filed: 1992-03-18
Abstract: In a digital radio-telephone receiver, an open-loop arrangement for generating a received-signal-strength-indicating ("RSSI") value suitable for use in mobile assisted hand-off within a cellular telephone system. The receiver has an amplifier for amplifying a received signal with a gain controlled by a gain-control signal, and an automatic-gain-control circuit ("AGC") responsive to the amplitude of the amplifier output and, coupled in a feedback-loop for applying an AGC signal to the amplifier as the gain-control signal. An RSSI value is generated by (i) opening the AGC feedback loop so that the AGC output signal is not applied to the amplifier, (ii) applying a ramp signal of increasing amplitude to the VGA while the AGC monitors the signal envelope, and (iii) when the signal envelope passes a pre-selected threshold, applying the then-occurring ramp-signal value to a calibrated look-up table to obtain the corresponding RSSI value stored therein.      Preferably, the receiver also employs a digital multiplexer ("MUX"), which provides to the amplifier as the gain-control signal, in response to a select signal, the ramp signal during a first period of time, and the AGC signal during a second period of time.
Patent CA-2065017-A1 (CA)
Title: Peptides from gtpase-activating protein (gap) and diagnostic and therapeutic use thereof
Inventor: MCCORMICK FRANCIS P
IPC: C07K16/00
Filed: 1990-08-20
Abstract: Peptides, that inhibit GAP stimulated ras p21 hydrolysis of GTP;  peptides that mediate dissociation of GDP from ras p21-GTP  complex; and antibodies to the peptides are described. These peptides are useful as cancer diagnostics and therapeutics, particularly to detect cancer cells with an over expression of normal or oncogenic ras p21 protein and to treat cancer caused by ras oncogene.  Methods for assaying products of oncogenes using the described peptides and antibodies are also disclosed. Method for treating cancer caused by ras oncogenes is also disclosed. Prefered peptides are (Thr)-Met-Arg-Thr-Arg-Val-Val-Ser-Gly-Phe-Val-Phe-Lev-Arg-Lev-Ile-Cgs.
Patent CA-2065351-A1 (CA)
Title: Process and device for casting metal rods or the like
Inventor: SCHWARZ RUDOLF
IPC: B22D25/02
Filed: 1990-08-30
Abstract: The invention relates to a process and a device for casting metal rods or the like in bag casting using a ingot mould (1) which sinks into a liquid bath (5) as it is being filled with the casting metal.  The ingot mould pipe (1) is filled with casting metal through a filling pipe (11).  The lower end of the filling pipe, which is lowered in advance into the ingot mould pipe, has an outlet opening (12).  The ingot mould pipe is suspended with its lower end at approximately the same level as the liquid bath (5) or above until this introduction is almost complete.  The casting metal is allowed to flow through the outlet opening (12) of the filling pipe (11) into the ingot mould pipe (1).  Simultaneously, the ingot mould pipe is lowered into the liquid bath (5) at a speed which bears a predetermined ratio to the speed at which the casting metal rises in the mould pipe (1).
Patent CA-2067501-A1 (CA)
Title: Process for manufacturing stable, low viscosity o/w anti-rust emulsions
Inventor: SPECKMANN HORST-DIETER
IPC: C23F11/12
Filed: 1990-09-25
Abstract: PROCESS FOR PREPARING STABLE LOW-VISCOSITY    O/W RUST-INHIBITING EMULSIONS                Abstract of the Disclosure The invention relates to a process for preparing stable  low-viscosity  O/W  rust-inhibiting  emulsions, wherein a mixture containing an oil component, water and at least one emulsifier component is emulsified at a temperature where all components of the mixture are in the liquid state and the emulsion formed is heated at a temperature within or above the temperature range of phase  inversion,  or the mixture  is  emulsified at a temperature within or above the temperature range of phase  inversion,  followed  by  cooling  the  resulting emulsion to a temperature below said temperature rang-and optionally by dilution with water, characterized in that a mixture having the following composition  is  employed  for  the  formation  of  the emulsion a)   from 10 to 60% by weight of an oil component, b)   from  1 to 10% by weight of an emulsifier component consisting of at least one addition product of from 2 to 20 moles of ethylene oxide to fatty alcohols having from 10 to 22 carbon atoms, c)   from  1 to 10% by weight of a corrosion inhibitor consisting of at least one carboxylic acid having the general formula (I) R-COOH              (I) , wherein R    represents  a   straight-chain   or  branched saturated or unsaturated  alkyl  moiety  com-prising from 6 to 22 carbon atoms or a moiety having the general formula (II)             (II) , wherein R1   represents  a  saturated  straight-chain  or branched alkyl moiety comprising from 8 to 18 carbon atoms, d)   from  0 to 10% by weight of co-emulsifier component consisting of at least one fatty alcohol comprising from 12 to 22 carbon atoms, and e)   water as the balance.
Patent CA-2071853-A1 (CA)
Title: Method and apparatus for re-profiling the cornea
Inventor: KILMER LAUREN G
IPC: A61B/
Filed: 1990-12-12
Abstract: Refractive error of the cornea is corrected by a scraping procedure using apparatus that is vacuum affixed to the eye (56, 54) and surrounding the cornea and a scraping tool (80) in which the tool is micro-adjustable relative to the cornea.